[Ash] Delete no longer needed dependencies on //c/b/a/crosapi

This CL deletes two more dependencies on //c/b/a/crosapi from feature
code in Ash. The deletion was made possible thanks to Lacros sunset.

Bug: 354710097
Test: tryjob
Change-Id: I07842679450840252be46c260c66ae8a2182aca3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6217559
Commit-Queue: Di Wu <diwux@google.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1413307}